OFFSET
0,1
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..11
MATHEMATICA
Accumulate[3^(2^Range[0, 10])] (* Harvey P. Dale, Oct 14 2012 *)
PROG
(PARI) {a(n) = sum(k=0, n, 3^2^k)} \\ Seiichi Manyama, Sep 08 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
Roger L. Bagula, Jun 07 2008
STATUS
approved